CN205284968U

CN205284968U - Tobacco air current cut -tobacco drier prevents putty device

Info

Publication number: CN205284968U
Application number: CN201521086904.7U
Authority: CN
Inventors: 贺万华; 刘伍平; 晏妮
Original assignee: China Tobacco Hunan Industrial Co Ltd
Current assignee: China Tobacco Hunan Industrial Co Ltd
Priority date: 2015-12-24
Filing date: 2015-12-24
Publication date: 2016-06-08
Anticipated expiration: 2025-12-24

Abstract

The utility model discloses a tobacco air current cut -tobacco drier prevents putty device, including air current cut -tobacco drier (2), install on the pipeline before technology air current and the tobacco drying air inlet temperature sensor (1), say at technology gas flow tube gas material after separating, before the technology fan and install return air temperature sensor (3), air inlet temperature sensor (1) and return air temperature sensor (3) access controller. The utility model discloses inlet temperature and the air return temperature and the participation control of ability detect process air current can in time be avoided the air current cut -tobacco drier to amass and expect that the equipment that causes blocks and fire insurance hidden danger.

Description

A kind of Nicotiana tabacum L. air flow type cut tobacco drier prevents putty device

Technical field

This utility model provides a kind of Nicotiana tabacum L. air flow type cut tobacco drier to prevent putty device.

Background technology

The application of Nicotiana tabacum L. air flow type cut tobacco drier is very general, the operation principle of air flow type cut tobacco drier is: be connected with high-temperature technology air-flow in air flow type cut tobacco drier, air-flow adopts blower fan to drive, the material counter current contact of high temperature gas flow and entrance, there is strong heat and mass transport process, the moisture rapid vaporization within tobacco is made to evaporate, the mixture of air-flow and tobacco together enters feeder and carries out Conveyance subsequently, material discharges system by gas lock, hot-air is aspirated by blower fan, it is used as toxic emission except the mixture of partial air and steam to fall, remaining major part high temperature gas flow is warmed device and reheats use, to save the energy.

Air flow type cut tobacco drier comparatively general at present, by controlling supplied materials flow, supplied materials moisture, the metastable method of supplied materials temperature, put into air flow type cut tobacco drier again, moisture content of outlet is typically in about 12.5%, if moisture deviation occurs in the material of air flow type cut tobacco drier outlet, control typically via the temperature regulating process gas flow. This means substantially, the machining load of air flow type cut tobacco drier is more stable.

The rotation speed of fan of most air flow type cut tobacco driers can not regulate at present, namely enables adjustment, is also that the mass flow to process gas flow is controlled, and the height of its rotating speed is limited by the height of measuring point gas flow temperature. This means that when design, process gas flow can promote tobacco to pass through air flow type cut tobacco drier under various operating modes, and otherwise, Nicotiana tabacum L. accumulates in air flow type cut tobacco drier long for time of contact with high temperature gas flow, will ultimately result in latent fire hazard or long-pending plug air flow type cut tobacco drier, solve to get up to bother very much.

The size of air-flow and the wind speed height of local are depended in Nicotiana tabacum L. flowing in air flow type cut tobacco drier, owing to the wind speed in air flow type cut tobacco drier does not detect monitoring, and the air-flow within air flow type cut tobacco drier is in high humidity state, a large amount of dust is produced again after Tobacco drying, easily block the screen cloth of feeder, ultimately cause process gas flow in system more and more lower, after reaching critical point, Nicotiana tabacum L. is likely to locally depositional phenomenon, finally produces hidden danger.

Utility model content

This utility model solves the technical problem that the Nicotiana tabacum L. air flow type cut tobacco drier being to provide a kind of equipment that air flow type cut tobacco drier buildup can be avoided in time to cause obstruction and latent fire hazard prevents putty device.

In order to solve above-mentioned technical problem, the Nicotiana tabacum L. air flow type cut tobacco drier that this utility model provides prevents putty device, including air flow type cut tobacco drier, pipeline before process gas flow with Tobacco drying is provided with inlet temperature sensor, process gas flow pipeline before after Conveyance, technique blower fan is provided with return air temperature sensor, described inlet temperature sensor and return air temperature sensor access controller.

The Nicotiana tabacum L. air flow type cut tobacco drier adopting technique scheme prevents putty device, if at normal productive process, the actual ratio of the T1/T2 actual difference more than X1 or T1-T2 is more than X2, and explanation is that in air flow type cut tobacco drier system, hot air flow diminishes, it is possible to cause system buildup. Because when drying load is certain, the energy of process gas flow release depends on the flow of process gas and the pad value of temperature, if process gas flow is on the low side, then after process gas flow dry Nicotiana tabacum L. release heat T2 temperature can become lower, in other words X1 can bigger than normal or X2 bigger than normal.

Adopt this utility model method, the inlet temperature of characterization processes air-flow and return air temperature and participate in controlling, the equipment that air flow type cut tobacco drier buildup causes can be avoided in time to block and latent fire hazard.

Accompanying drawing explanation

Fig. 1 is this utility model structural representation.

1 inlet temperature sensor; 2 air flow type cut tobacco driers; 3 return air temperature sensors.

Detailed description of the invention

Below in conjunction with the drawings and specific embodiments, this utility model is further illustrated.

Referring to Fig. 1, a kind of Nicotiana tabacum L. air flow type cut tobacco drier prevents putty device, pipeline before process gas flow with Tobacco drying is provided with inlet temperature sensor 1, process gas flow pipeline before after Conveyance, technique blower fan is provided with return air temperature sensor 3, inlet temperature sensor 1 and return air temperature sensor 3 access controller.

Referring to Fig. 1, utilize air flow type cut tobacco drier 2 when dehydrating amount and machining load are certain, the dependency relation that the inlet temperature of process gas flow and return air temperature exist, pipeline before process gas flow with Tobacco drying is provided with inlet temperature sensor 1, the inlet temperature T1 of characterization processes air flow inlet, after Conveyance, process gas flow pipeline before technique blower fan is provided with return air temperature sensor 3, detection return air temperature T2, inlet temperature sensor 1 and return air temperature sensor 3 access controller, the ratio X 1 of T1/T2 or the difference X2 of T1-T2 are set in controller, if at normal productive process, the actual ratio of the T1/T2 actual difference more than X1 or T1-T2 is more than X2, controller controls to stop the charging of air flow type cut tobacco drier.

Embodiment 1: this utility model is applied on SDT stem drying tower.

In daily production process, the temperature of T1 is between 220 degree��240 degree, T2 temperature is between 135 degree��145 degree, and ratio is about 1.65, and the value arranging X1 in the controls is 1.7, once T1/T2 actual ratio is more than 1.7, then stop the charging of SDT, check, it has been found that mostly be the screen plugging of tangential feeder, cause systematic air flow on the low side caused by, and simultaneously can bottom the drying tower of air flow type cut tobacco drier a large amount of stems of remaining.

Claims

1. a Nicotiana tabacum L. air flow type cut tobacco drier prevents putty device, including air flow type cut tobacco drier (2), it is characterized in that: the pipeline before process gas flow with Tobacco drying is provided with inlet temperature sensor (1), process gas flow pipeline before after Conveyance, technique blower fan is provided with return air temperature sensor (3), described inlet temperature sensor (1) and return air temperature sensor (3) access controller.